Please help identify this 10 ounce silver bar

Ppp

Side

Reverse

Obverse

Ppp

FYI

I checked allengelhard.com with no luck.

When I used google and AI, many times, once it said sunshine mining company (not sunshine minting inc) but the best reply was the following in pictures for Ohio precious metals because it stated “precisely matches vintage…” but I am not convinced because I do not see any confirmation pictures.

I am hoping someone on this forum has seen this type of bar and knows some details.